wtb: sti pinks, sti vf39 and walbro 255 & cobb access port
03-11-2010, 10:46 PM
#17
VF34
This turbo is used on the JDM Subaru Impreza WRX STi Spec-C.
The VF34 is mostly identical to the VF30, with the same exhaust housing and compressor wheel. However the VF34 goes back to the ball bearing design, and in doing so creates full boost roughly 250rpm-500RPM sooner than the VF30. The VF34 is the most recent in IHI design and as such costs slightly more than its counterpart and was originally introduced on the Limited Edition STi Type RA Spec C from the of november 2001.Power wise Top end performance and maximum output are identical to the VF30. The Vf34 is a ball bearing turbo with a 479 comp wheel and a P18 Turbine Housing. 460 cfm at 18 psi maxium output 325bhp approx
VF39
This turbo is the standard choice used on the USDM (USA Market) Subaru Impreza WRX STI and the 2.5l internationally released STI's . The VF39 is a single scroll turbo, smaller than VF30/VF34. It can be found on all model years from 2004-2006. The VF39 utilizes a thrust bearing design and the P15 exhaust housing.
Expect to achieve full boost with the correct supporting mods and a good map between 3000-3500 rpms.For all the 2002-2005 WRX owners you would need fuel upgrades for this turbo and correct engine management is highly recommended for all persons wanting to use this turbo as an aftermarket. Though they can be known to crack (wastegate hole),A VF39 can be picked up quite cheaply if bought used.power of around 325bhp+ can easy be had from this unit.
edit:sourced from www.imprezatypera.com
This turbo is used on the JDM Subaru Impreza WRX STi Spec-C.
The VF34 is mostly identical to the VF30, with the same exhaust housing and compressor wheel. However the VF34 goes back to the ball bearing design, and in doing so creates full boost roughly 250rpm-500RPM sooner than the VF30. The VF34 is the most recent in IHI design and as such costs slightly more than its counterpart and was originally introduced on the Limited Edition STi Type RA Spec C from the of november 2001.Power wise Top end performance and maximum output are identical to the VF30. The Vf34 is a ball bearing turbo with a 479 comp wheel and a P18 Turbine Housing. 460 cfm at 18 psi maxium output 325bhp approx
VF39
This turbo is the standard choice used on the USDM (USA Market) Subaru Impreza WRX STI and the 2.5l internationally released STI's . The VF39 is a single scroll turbo, smaller than VF30/VF34. It can be found on all model years from 2004-2006. The VF39 utilizes a thrust bearing design and the P15 exhaust housing.
Expect to achieve full boost with the correct supporting mods and a good map between 3000-3500 rpms.For all the 2002-2005 WRX owners you would need fuel upgrades for this turbo and correct engine management is highly recommended for all persons wanting to use this turbo as an aftermarket. Though they can be known to crack (wastegate hole),A VF39 can be picked up quite cheaply if bought used.power of around 325bhp+ can easy be had from this unit.
edit:sourced from www.imprezatypera.com
Last edited by Alliedforces86; 03-11-2010 at 11:26 PM.
03-29-2010, 11:30 PM
#27
Lol I already thought of that. I have all of the following from a 06 sti: 6 speed transmission, hubs, axles, diff, dccd controller and a whole lot of suspension stuff. Upgrading the engine is my last stage. I wanted a good foundation. Thanks for ur input tho. I know the 5 speed wrx (GLASS BOX) wouldn't last with these upgrades lol.
03-30-2010, 01:40 AM
#28
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Join Date: Sep 2008
Location: California
Posts: 159
Car Info: 2013 STI
I did my research and I spoke to a lot of people who have the ppg gears and all but one of them wished they went with the sti transmission from the beginning. I got hooked up on a good price for all kinds of 06 sti parts and I decided to. Jump on it. I did all the work myself so the cost was pretty reasonable. I have no regrets, and my 06 sti transmission is still running strong.
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